Electronics and Communication Engineering

With 57 marks, you did not get admission to Delhi Technical University, Delhi. This is a general prediction because prediction depends on many factors like domicile, gender, All India rank, and category rank, and you did not provide this information. However, you may get admission into these good colleges in Computer Science and Engineering branch. A list of colleges is-
1- Noida Institute of Engineering and Technology.
2- Raj Kumar Goel Institute of Technology.
3- Delhi Institute of Engineering and Technology.
4- JIMS Engineering Management Technical Campus. For more details, you may use the Shiksha JEE Main college predictor tool. (https://www.shiksha.com/engineering/jee-main-college-predictor). I hope this will help you.

According to your information, you have very little chance to get admission to Raichur for Computer Science and Engineering or Electronics Communication and Engineering branch. Also, the result depends on your domicile, and what you have not shared. However, you may get admission to Solapur in Computer Science and Engineering or Electronics Communication and Engineering branch. The distance between Raichur to Solapur is only 225km. A list of colleges in Solapur where you may get admission to CSE or ECE branches.
1- A. G. Patil Institute of Technology, Soregaon.
2- Shree Siddheshwar Women's College of Engineering.
3- MIT College of Railway Engineering and Research.
4- Karmayogi Engineering College.
5- Brahmdevdada Mane Institute of Technology.
6- Vidya Vikas Pratishthan Institute of Engineering and Technology, Solapur. For more accurate results, you may use the Shiksha JEE Main college predictor. (https://www.shiksha.com/engineering/jee-main-college-predictor). I hope this will help you.

You can get admission in the Mechanical Engineering branch of B.Tech at DTU with your rank according to the previous year's admission closing ranks data. According to the information you have provided, it is slightly difficult to get into Delhi Technological University if you are an outside Delhi applicant. DTU announces separate JEE Mains cut-offs for Delhi and out-of-state applicants. In 2021, the closing rank for outside Delhi applicants to get a B.Tech. In Electrical Engineering was 13680, and it was 19606 for mechanical. On the other hand, for home state students, it was over 30,000 for the mechanical branch. So you can get a B.Tech in the mechanical branch, but getting the electrical branch can still be difficult. Else You can wait for DTU's official cutoff.

It completely depends on the branch you select. Some private colleges are very good in particular branches like Cse, ece than government universities. So it depends on the branch you opt for.
But here are some good colleges in AP,
Andhra University, Jntu kakinada, sv university, Godavari institute of Engineering and technology, Aditya engineering college, KLUniversity, Vignan university, Sree Vishnu educational institutions,Gayatri vidya parishad,Anits,Mvgr.
The above mentioned colleges gives you knowledge and adds value to your certificates.
But If it comes to placements in particular branches like cse and ece, Vignan and Raghu engineering colleges are showing best results in bringing top product based companies with good packages. And for Civil,GMR is one of the good colleges to be added in the list.
Not only the rankings but also take reviews from the students studying in the college before you choose anyone.